补强开孔板在剪切荷载作用下的屈曲性能

程斌; 李纯

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Buckling behavior of strengthened perforated plates under shear loading

首发时间：2012-06-27

CHENG Bin ¹
CHENG Bin,（1979-）,Male,Associate Professor.
LI Chun ²

1、School of Naval Architecture,Ocean and Civil Engineering,Department of Civil Engineering,Shanghai Jiao Tong University, Shanghai 200240
2、School of Naval Architecture,Ocean and Civil Engineering,Department of Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240

Abstract：This paper is dedicated to the buckling behaviors of strengthened perforated plates under edge shear loading, which is a typical load pattern of steel plates in civil engineering, especially in plate and box girders. The square plates considered each has a centric circular hole and is simply supported on four edges in the out-of-plane direction. Three types of strengthening stiffeners named ringed stiffener (RS), flat stiffener (FSA and FSB) and strip stiffener (SSA, SSB and SSC) are mainly discussed. The finite element method (FEM) has been employed to analyse the elastic and elasto-plastic buckling behavior of unstrengthened and strengthened perforated plates. Results show that most of the strengthened perforated plates behave higher buckling strengths than the unstrengthened ones, while the enhancements in elastic buckling stress and elasto-plastic ultimate strength are closely related to stiffener types as well as plate geometric parameters including plate slenderness ratio and hole diameter to plate width ratio. The critical slenderness ratios of shear loaded strengthened perforated plates, which determine the practical buckling pattern (i.e., elastic or elasto-plastic buckling) of the plates, are also studied. Based on the contrastive analyses of strengthening efficiency considering the influence of stiffener consumption, the most efficient cutout-strengthening methods for shear loaded perforated square plates with different slenderness ratios and circular hole diameter to plate width ratios are preliminarily identified.

keywords： strengthened perforated plate circular hole shear loading elastic buckling stress elasto-plastic ultimate strength cutout-strengthening

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补强开孔板在剪切荷载作用下的屈曲性能

程斌 ¹
CHENG Bin,（1979-）,Male,Associate Professor.
李纯 ²

1、上海交通大学船舶海洋与建筑工程学院土木工程系，上海 200240
2、School of Naval Architecture,Ocean and Civil Engineering,Department of Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240

摘要：This paper is dedicated to the buckling behaviors of strengthened perforated plates under edge shear loading, which is a typical load pattern of steel plates in civil engineering, especially in plate and box girders. The square plates considered each has a centric circular hole and is simply supported on four edges in the out-of-plane direction. Three types of strengthening stiffeners named ringed stiffener (RS), flat stiffener (FSA and FSB) and strip stiffener (SSA, SSB and SSC) are mainly discussed. The finite element method (FEM) has been employed to analyse the elastic and elasto-plastic buckling behavior of unstrengthened and strengthened perforated plates. Results show that most of the strengthened perforated plates behave higher buckling strengths than the unstrengthened ones, while the enhancements in elastic buckling stress and elasto-plastic ultimate strength are closely related to stiffener types as well as plate geometric parameters including plate slenderness ratio and hole diameter to plate width ratio. The critical slenderness ratios of shear loaded strengthened perforated plates, which determine the practical buckling pattern (i.e., elastic or elasto-plastic buckling) of the plates, are also studied. Based on the contrastive analyses of strengthening efficiency considering the influence of stiffener consumption, the most efficient cutout-strengthening methods for shear loaded perforated square plates with different slenderness ratios and circular hole diameter to plate width ratios are preliminarily identified.

关键词： strengthened perforated plate; circular hole; shear loading; elastic buckling stress; elasto-plastic ultimate strength; cutout-strengthening

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CHENG Bin,LI Chun. Buckling behavior of strengthened perforated plates under shear loading[EB/OL]. Beijing:Sciencepaper Online[2012-06-27]. https://www.paper.edu.cn/releasepaper/content/201206-368.

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论文编号	201206-368
论文题目	补强开孔板在剪切荷载作用下的屈曲性能
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